Apple has released the 27-inch LED Cinema Display Software Update 1.0 via their Software Update utility and website. According to the company, this software updates the System Preferences pane where you can change Ambient Light Sensor settings. It also includes a modification to the Sound preferences pane that will allow you to select the LED Cinema display as your audio output. More information about this update can be found here. The 27-inch LED Cinema Display Software Update 1.0 weighs in at 75.79MB and requires Mac OS X 10.6.4.